Introduction to the CDVI C3S11 and its key features
CDVI C3S11 — Surface Monitored Maglock, 300 kg, 12/24Vis a compact, surface-mounted electromagnetic lock designed for indoor access control applications where monitored status and fail-safe operation are required. With a 300 kg holding force, selectable 12/24 V DC operation, and a built-in changeover relay for lock status monitoring, the C3S11 is positioned as a practical choice for contractors, installers and facilities managers seeking a reliable, space-efficient maglock for internal doors, server rooms, office access points and retrofit projects.
The family of features that define the C3S11 include monitored lock status (COM / NO / NC), jumper-selectable voltage (12 V or 24 V DC), built-in varistor/back-EMF protection, compact physical dimensions and an indoor-oriented IP42 / IK10 rating. It is supplied ready to install with an armature plate, fixings and a fitting template, making it straightforward to integrate into common surface-mount installations.
Detailed description of specifications and benefits
Understanding the C3S11’s specifications helps explain where it fits and why it delivers value in everyday access-control projects. Below is a breakdown of the main specification groups and the benefits they provide in real-world installations.
- Model:CDVI C3S11 — a purpose-built surface-mounted monitored electromagnetic lock.
- Supplied with:Armature plate (185 x 38 x 11 mm), fixings, template and fitting instructions. Benefit: reduces ordering complexity and speeds installation because the essential mechanical components are included.
- Voltage:12 / 24 V DC (jumper-selectable). Benefit: flexibility to work with common DC access-control power supplies; good for sites that standardise on either 12 V or 24 V.
- Current & power:≈480 mA @ 12 V DC; ≈240 mA @ 24 V DC (≈5.3 W). Benefit: predictable consumption that lets designers size power supplies and battery backups accurately—24 V operation reduces current draw and cabling losses.
- Protection:Built-in varistor/back-EMF protection. Benefit: guards control electronics against voltage spikes during switching events, helping to protect connected controllers and relays.
- Lock status monitoring:One changeover relay (COM / NO / NC). Benefit: direct, reliable status feedback to access panels, control systems or monitoring software—useful for alarm logging and remote diagnostics.
- Holding force:300 kg. Benefit: sufficient for most internal doors and light commercial applications where high-security external rating isn’t required.
- Magnet dimensions:250 x 43 x 27 mm (L x W x D). Benefit: compact footprint that works well on narrow frames and tight door-to-frame clearances.
- Armature plate:185 x 38 x 11 mm. Benefit: standard armature size compatible with many surface-mount brackets and retrofit brackets.
- Weight:≈1.75 kg. Benefit: light enough for straightforward surface mounting without heavy-duty supports.
- IP rating:IP42. Benefit: designed for indoor use where it is protected from direct water jets but can tolerate typical indoor dust levels.
- Impact rating:IK10. Benefit: strong resistance to mechanical impact, useful in higher-traffic internal areas where the unit could be bumped.
- Operating temperature:≈ −20°C to +60°C. Benefit: wide operating range suitable for most interior climates and server/plant rooms.
- Intended use:Indoor recommended. Benefit: optimised cost and size for internal doors rather than exposed external installations.
- Fire rating:EN 1634‑1 & 2 — 30 min. Benefit: fire-tested component for certain controlled emergency escape or building regulation scenarios (check local code for compliance requirements).
- Fail-safe operation:Unlocks on loss of power. Benefit: meets fire and life-safety expectations where doors must release to allow egress when power is lost.
- Datasheet & manual:CDVI C3S11 documentation available. Benefit: provides installation detail and wiring diagrams to ensure code-compliant setups.
Use cases and scenarios where the product excels
The CDVI C3S11 is best suited to applications that prioritise monitored access, compact size and fail‑safe behaviour. Typical scenarios include:
- Internal office doors:For internal secure rooms where staff access control and door status monitoring are required but extremely high holding forces are unnecessary.
- Server and equipment rooms:Monitored lock status provides administrators with tamper or entry alerts; compact size helps fit into server-room door frames or retrofit brackets.
- Retrofit projects:Surface mount design and included fixings make it a convenient option where existing frames or doors do not allow in‑frame hardware or major carpentry work.
- Controlled access corridors and reception areas:The monitored relay integrates with access control panels to allow logging and interlocking sequences across multiple doors.
- Internal doors in retail, healthcare or schools:Where fail-safe release on power loss is required for safety or regulations while retaining monitored status during normal operation.
Comparisons with similar products in the market
When selecting a maglock, buyers typically weigh holding force, monitoring options, size, environmental rating and fail-safe vs fail-secure operation. The C3S11 competes strongly in the compact, monitored, fail‑safe category. Key comparison points:
- Holding force:At 300 kg the C3S11 is ideal for standard internal doors. Other maglocks offer 600 kg or 1200 kg holding force for external or high-security doors; those heavier units are larger, draw more power and are over‑specified for many internal uses.
- Monitored vs unmonitored:The built-in changeover relay gives the C3S11 an edge for systems that require explicit lock-status feedback. Simpler unmonitored maglocks may be cheaper but sacrifice monitoring and diagnostics.
- Voltage flexibility:Jumper-selectable 12/24 V is convenient—some competitor models are fixed to 12 V or 24 V which can complicate integration into mixed-voltage sites.
- Fail-safe vs fail-secure:This unit is fail-safe (unlocks on power loss), which aligns with life-safety expectations in many indoor installations. For perimeter doors where a locked state must persist during power outage, a fail-secure or mechanical lock would be required instead.
- Environmental rating:IP42 and IK10 make the C3S11 suitable for indoor, impact-prone settings. If external weatherproofing is needed, look to models with IP65/66 ratings or specialised enclosures.
Customer testimonials and installer feedback
There are no specific verified customer reviews provided with the product data. However, typical installer and contractor feedback for a product with this specification profile usually highlights the following points:
- "Compact size made retrofit straightforward—fit exactly where a larger maglock wouldn’t."
- "Monitored relay saved time integrating with the access control panel; no extra sensors needed."
- "Selectable 12/24 V is a useful feature on sites with mixed voltage supplies."
- "The unit feels robust for internal use and the IK10 rating gives confidence in busy areas."
When evaluating these representative comments, buyers should seek live testimonials or case studies from distributors, installers or end-users to confirm real-world performance in a matching application.
Buying considerations and practical tips
- Power supply sizing:Account for the lock’s current draw (≈480 mA @ 12 V or ≈240 mA @ 24 V) and any ancillary devices when specifying the DC power source and battery backup for emergency release times.
- Door/frame alignment:Ensure accurate alignment and scrub fit to achieve full holding force. Use recommended mounting brackets if the frame is non-standard or if there are gaps between magnet and armature.
- Safety & code compliance:Confirm local fire and building codes for fail‑safe devices and emergency egress—check the EN 1634 fire test rating applicability for your jurisdiction.
- Warranty & support:No warranty information is specified in the provided data—confirm warranty terms with the supplier or CDVI representative prior to purchase.
- Price note:Suggested price is 49.99 (currency not specified). Confirm local pricing, availability and any trade discounts with your distributor.
Conclusion — why the CDVI C3S11 is a strong choice
The CDVI C3S11 surface monitored maglock offers a compelling balance of monitoring capability, compact form factor and fail‑safe operation for indoor access-control needs. Its 300 kg holding force is well-suited to internal doors and retrofit projects, while the jumper-selectable 12/24 V input and built-in changeover relay simplify integration into a wide range of access control systems.
For installers and specifiers who need a monitored maglock that is easy to fit, protects against electrical transients and supports life-safety fail‑safe behaviour, the C3S11 is a practical, cost-effective option. Before purchase, confirm power supply sizing, local code compliance and warranty terms with the supplier to ensure the product matches your project requirements. With correct installation and compatible control equipment, the C3S11 provides reliable performance for many everyday internal access-control scenarios.
